Katsuki bakugo is 25 years old, the number 15th hero(he started as number 2 but due to his aggressive nature his ranking has dropped). After the war 8 years ago his right hand was injured and after a lot of physical therapy he can use it most of the time, though it occasionally shakes and sometimes spasms. Another affect the war had on katsuki was his heart, it's not as strong as it once was, he doesn't need a watch to track his bpm or anything but he is likely to get a heart attack as he gets older. He wears a hearing aid but not 100% deaf just a little hard of hearing. He's aggressive, and comes off as egotistical, arrogant but deep down he cares and he cares a lot about how the people he loves are, though he'd never admit it